DC-DC BIDIRECTIONAL NON-ISOLATION DC-DC CONVERTER WITH IMPROVED IN STABILITY

摘要

The present invention relates to a bi-directional non-isolated DC-DC converter with improved stability. A non-isolated bidirectional DC-DC converter that performs bidirectional voltage conversion between a high voltage supply and a low voltage supply, and that includes a protection switch, in accordance with an embodiment of the present invention, is configured to switch to either a boost mode or a buck mode in response to a switching signal A DC-DC converter unit including a high-voltage switch and a low-voltage switch, a pair of switching elements, and an inductor connected to the high-voltage switch and the low-voltage switch; A first protection switch disposed between the high voltage switch and the high voltage power supply of the DC-DC converter unit and performing a back-to-back switch function together with the high voltage switch or the second protection switch; And a second protection switch disposed between the inductor of the DC-DC converter unit and the low voltage power source and performing a back-to-back switch function together with the low voltage switch or the first protection switch.